Work

Cosmological FLRW Phase Transitions Under Exponential Corrected Entropy

Year: 2025

Type: article

Abstract: This work considers how exponential corrections to the Bekenstein–Hawking entropy formula affect the thermodynamic behavior of the FLRW cosmological model. These corrections significantly alter the form of the Friedman field equations, leading to nontrivial phase transition behavior. For negative values of the tracking parameter , the system presents first‐order phase transitions above the critical temperature, and for positive , the system undergoes a reentrant phase transition. As these corrections are presumably relevant at the early Universe stage, to corroborate the presence of some potential vestige of this contribution in the current era, a study has been carried out comparing observational data and current values of the Hubble parameter.

Source: Fortschritte der Physik

DOI: 10.1002/prop.70063

Authors: Rodrigo Rivadeneira‐Caro, Joel F. Saavedra, Francisco Tello‐Ortiz

Institutions: Pontificia Universidad Católica de Valparaíso, Pontificia Universidad Católica de Chile, Universidad de La Frontera

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Innovative Research Group Project of the National Natural Science Foundation of China, Agencia Nacional de Investigación y Desarrollo

Award: CONSTRAINING NON-STANDARD THEORETICAL COSMOLOGICAL MODELS USING THE POWER OF ASTRONOMICAL OBSERVATIONS